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Date:      Thu, 22 Nov 2001 12:16:40 -0800
From:      Kris Kennaway <kris@obsecurity.org>
To:        Dmitry Mottl <dima@sinp.msu.ru>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: dynamic loaders
Message-ID:  <20011122121640.D29254@xor.obsecurity.org>
In-Reply-To: <3BFD1A8F.1000504@sinp.msu.ru>; from dima@sinp.msu.ru on Thu, Nov 22, 2001 at 06:32:31PM %2B0300
References:  <3BFD1A8F.1000504@sinp.msu.ru>

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On Thu, Nov 22, 2001 at 06:32:31PM +0300, Dmitry Mottl wrote:
> Hi, All
>=20
> What are /usr/libexec/ld.so and /usr/libexec/ld-elf.so.1?

ld.so is the old a.out dynamic linker.  ld-elf is the ELF dynamic
linker; see rtld(1).

FreeBSD prior to 3.1-RELEASE used the a.out binary format, and this
was changed to ELF for 3.1.

> Why compat20,compat21,compat22 of FreeBSD distributive
> have their own /usr/libexec/ld.so?

Because they presumably were different, and you need them to run
binaries built on those version.

> How do I install ALL compat2?

Install all of compat20, compat21, compat22.

Kris

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